1. Players, coaches and team personnel, aside from medical staff, are subject to suspension for leaving the bench area and entering the field. (The NBA has a similar rule.)

2. Any action involving a hand to the face or head of an opponent, even a light slap with the purpose of inciting and not injuring, is subject to fine and suspension.

3. A coach or staff member approaching match officials from the time they arrive at the stadium until they depart is subject to fine and suspension. Here, too, there is a lot of gray area: What is the physical threshold — 10 yards or 30 yards? Is a coach allowed to shout from distance? What if the coach and assistant referee cross paths on the sideline and words are exchanged?

• Speaking of the league, commissioner Don Garber has some pretty big goals: Be among the world's premier soccer leagues by 2022.

"I think the plan has been in place for some time, now we have given ourselves a very targeted goal and it's a bold one," Garber said in an interview with The Associated Press this week. "It's not going to be easy to achieve it but it's one we're very confident if we stay focused and things continue to align for us as they have the last couple of years."